Zip or Rar your package, and post it.
You can also upload to
ftp://imagemodserver.mine.nu/uploads if you are desperate.
Required files:
- Portraits - obvious
- Minis - either in a "mini-strip" separate files.
(These MUST be in the same order as the portraits, or things will get messy!)
- Credits.txt - write down who needs to be credited for the creation of the images, and how. Text only, keep it short and to the point.